PURPOSE: To obtain monoisocyanates or polyisocyanates in a short time and in a high yield by a method in which a solution of phosgene in an organic solvent is mixed with monoamines or polyamines in a nozzle of a special structure, each component of a formed product flow is reacted while avoiding clogging and solid deposition.
CONSTITUTION: Into a nozzle 1 in which an insert body 4, in which a lateral hole part 5 is formed, is inserted into supply piping 2 to form a contraction part 3, one of a phosgene component consisting of the solution of phosgene in an organic solvent (concentration 10-85 wt.%, especially 40-65 wt.%) and an amine component, which consists of monoamine or polyamine and as required dissolved in an organic solvent (concentration 5-50 wt.%, especially 10-25 wt.%) is supplied as an axial flow at a flow velocity at the contraction part of 1-10 m/sec, while the other is introduced as a lateral flow into the axial flow through the hole part 5 to form a product flow, and each component of the product flow is reacted to obtain an intended compound. The phosgene component is preferably supplied as the axial flow.
HERUMUUTO YUDATSUTO
ERITSUKU BOONSUTORA
SUTEFUAN DE BUOSU
RORUFUUDABURIYUU ETSUKERUMAN
JIIKUBERUTO HANBURUGEN
